CN212615374U - Compressor connection structure for fuel cell - Google Patents

Abstract

The utility model discloses a compressor connecting structure for fuel cell, which comprises a compressor main unit part and a motor part which are assembled into a whole from front to back, wherein the motor part comprises a shell fixedly connected at the rear part of the compressor main unit part, a stator fixedly arranged in the shell, and a rotor which is arranged in the stator and can axially rotate; the motor part also comprises a motor shaft penetrating through the rotor, and the front end of the motor shaft extends forwards and extends into the cylinder body to form one of the rotor components. In the technical scheme, the motor shaft and one of the rotor components are integrally formed, the middle connecting device is omitted, the parts of the compressor can be effectively reduced, the whole size and weight are reduced, the transmission efficiency is improved, the transmission loss and the transmission rotating speed difference are reduced, the whole length is reduced, the influence caused by bad working conditions in the driving process of the vehicle is effectively avoided, and the stability is better.

Description

Compressor connection structure for fuel cell

Technical Field

The utility model relates to a compressor and electrical equipment technical field especially relate to a compressor connection structure for fuel cell.

Background

With the coming of the policies of energy conservation and emission reduction and environmental protection in China, the market demands for high efficiency and clean energy are increasing day by day. The hydrogen energy has the characteristics of zero carbon dioxide emission, no pollution, sufficient reserve, cyclic regeneration, easy storage, easy transportation and the like. A hydrogen fuel cell is a device that converts chemical energy of hydrogen and oxygen into electric energy through an electrode reaction, and the basic principle thereof is a reverse reaction of electrolysis water, in which hydrogen and oxygen are supplied to an anode and a cathode, respectively, and after the hydrogen diffuses outward through the anode and reacts with an electrolyte, electrons are emitted to the cathode through an external load. The discharged waste only contains water and heat, and is considered to be one of the most promising energy sources at present because no carbon is discharged.

The air compressor plays an important role in a hydrogen fuel cell system and belongs to key parts. Different from the traditional industrial air compressor, the hydrogen fuel cell air compressor has the characteristics of high reliability, long service life, no oil in exhaust, low noise, light weight, miniaturization, low cost, high response speed and the like. At present, the air compressor of the hydrogen fuel cell for the vehicle mainly comprises a centrifugal type, a screw type, a Roots type, a vortex type and the like. The screw type supercharging device belongs to mechanical supercharging, and has the advantages of almost unchanged performance, high efficiency and high reliability under the condition of working condition change, but large noise and heavy weight.

At present, a screw type vehicle hydrogen fuel cell air compressor is driven by a high-speed motor, the motor and the air compressor need to adopt a connecting disc or other connecting devices, the structural assembly requirement is high, the overall structural size and weight can be increased, the vehicle encounters severe working conditions (such as rapid acceleration or rapid deceleration), the connecting mode can increase the rotational inertia, and the working performance and the service life of the vehicle are influenced.

SUMMERY OF THE UTILITY MODEL

In view of the above problems in the prior art, a compressor connection structure for a fuel cell is provided to eliminate an intermediate connection device and effectively avoid the influence caused by bad working conditions during the driving of a vehicle, so as to overcome the above technical defects.

The specific technical scheme is as follows:

a kind of fuel cell uses the compressor linkage, including assembling the host computer part of the compressor and electrical machinery part as an organic whole front and back, the electrical machinery part includes the body of the rigid coupling in the rear part of the host computer part of the compressor, the stator mounted in body fixedly, the rotor that can be rotated and set up in the stator axially, the host computer part of the compressor includes the cylinder block, at least two rotor components mounted in cylinder block rotatably;

the motor part also comprises a motor shaft penetrating through the rotor, and the front end of the motor shaft extends forwards and extends into the cylinder body to form one of the rotor components.

Preferably, the compressor main unit part further comprises an air inlet end cover arranged at the front end of the cylinder body and a connecting plate arranged at the rear end of the cylinder body, and the shell of the motor part is fixedly arranged on the connecting plate.

Preferably, one end of the motor shaft connected with the rotor is of a straight shaft structure, a shaft sleeve is sleeved outside the motor shaft, the rotor is installed on the periphery of the shaft sleeve in a limiting mode, and the rear end of the motor shaft is limited by a locking nut.

Preferably, one end of the motor shaft connected with the rotor is of a conical shaft structure, a shaft sleeve is sleeved outside the conical shaft structure, the rotor is installed on the periphery of the shaft sleeve in a limiting mode, and the rear end of the motor shaft is locked with the connecting shaft sleeve through a screw

Preferably, the number of the rotor members is two, and the rotor members include a driving rotor formed by a motor shaft, and a driven rotor juxtaposed and adjacent to the driving rotor.

Preferably, an exhaust seat is further installed between the rear end of the cylinder body and the connecting plate, a gear box is formed between the exhaust seat and the connecting plate, and two gears which are meshed with each other are arranged in the gear box and are respectively connected with the shaft parts of the driving rotor and the driven rotor.

Preferably, the connecting plate is provided with a through hole for allowing the motor shaft to pass through, and the shell of the motor part is fixedly arranged on the connecting plate through a fastener.

The beneficial effects of the above technical scheme are that:

the compressor connection structure for the fuel cell comprises a compressor main machine part and a motor part, the motor part comprises a shell, a stator, a rotor, a motor shaft, the compressor main machine part comprises a cylinder body, at least two rotor components, the motor shaft is integrally formed with one of the rotor components, a middle connecting device is omitted, the parts of the compressor can be effectively reduced, the whole size and the weight are reduced, the transmission efficiency is improved, the transmission loss and the transmission rotating speed difference are reduced, the whole length is reduced, the influence caused by bad working conditions in the driving process of a vehicle is effectively avoided, and the stability is better.

Drawings

Fig. 1 is a perspective view of a compressor connecting structure for a fuel cell according to the present invention;

fig. 2 is a plan view of the connection structure of the fuel cell compressor of the present invention;

fig. 3 is a sectional view of the connection structure of the fuel cell compressor of the present invention;

fig. 4 is a sectional view of another embodiment of the connection structure of the fuel cell compressor according to the present invention.

Detailed Description

In order to make the technical means, creation features, achievement purposes and effects of the present invention easy to understand, the following embodiments are specifically illustrated in conjunction with the accompanying drawings. And defines the direction from left to right as viewed in the plane of the paper in fig. 3 as the direction from back to front in this embodiment.

In the first embodiment, the first step is,

referring to fig. 1 to 3, the compressor connection structure for a fuel cell according to the present embodiment includes a compressor main unit 2 and a motor unit 1, which are assembled into a whole, the motor unit 1 includes a housing 11 fixedly connected to a rear portion of the compressor main unit 2, a stator 12 fixedly installed in the housing 11, and a rotor 13 axially rotatably installed in the stator 12, the compressor main unit 2 includes a cylinder 21, and at least two rotor members rotatably installed in the cylinder 21, wherein the motor unit 1 further includes a motor shaft 14 penetrating through the rotor 13, and a front end of the motor shaft 14 extends forward and extends into the cylinder 21 to form one of the rotor members.

Based on the above technical scheme, compressor connection structure for fuel cell includes compressor host computer part 2 and motor part 1, motor part 1 includes casing 11, stator 12, rotor 13, motor shaft 14, compressor host computer part 2 includes cylinder body 21, two at least rotor components, and motor shaft 14 and one of them rotor component integrated into one piece, middle connecting device has been cancelled, can the effectual spare part that reduces the compressor, whole size and weight reduce, increase its transmission efficiency, and reduced transmission loss and transmission rotational speed difference, make whole length reduce, effectively avoid the influence that the bad operating mode brought among the vehicle driving process, its stability is better.

In a preferred embodiment, the compressor main unit part 2 further includes an air inlet cover 22 installed at the front end of the cylinder body 21, and a connecting plate 24 installed at the rear end of the cylinder body 21, and the housing 11 of the motor part 1 is fixedly installed on the connecting plate 24, specifically, the connecting plate 24 seals the rear open end of the cylinder body 21, and a through hole for allowing the motor shaft 14 to pass through is opened on the connecting plate 24, and the housing 11 of the motor part 1 is directly and fixedly installed on the connecting plate 24 through a fastening member, so that the connection between the motor part 1 and the compressor main unit part 2 does not need a sealing structure, while in the prior art, the connection structure between the motor and the main unit is complex, generally needs to install a sealing part, not only the assembly process is complicated, but also the connection may be unstable under some extreme working conditions, the sealing failure may affect the stability of the compressor, based, this problem can be solved significantly.

In a further preferred embodiment, one end of the motor shaft 14 connected with the rotor 13 is a straight shaft structure, a shaft sleeve 15 is sleeved outside the motor shaft 14, the rotor 13 is limited and installed on the periphery of the shaft sleeve 15, and the rear end of the motor shaft 14 is limited by a locking nut 16, so that the purposes of limiting and installing between the motor shaft 14 and the rotor 13 are achieved.

Further, the number of rotor members is two, and includes a driving rotor 25 formed by the motor shaft 14, and a driven rotor 26 juxtaposed and adjacent to the driving rotor 25. Furthermore, an exhaust seat 3 is installed between the rear end of the cylinder body 21 and the connecting plate 24, a gear box is formed between the exhaust seat 3 and the connecting plate 24, two gears 23 which are meshed with each other are arranged in the gear box, and the gear box is respectively connected with the shaft parts of the driving rotor 25 and the driven rotor 26 so as to achieve the purpose of transmission connection. Specifically, an internal channel of the exhaust seat 3 is communicated with an internal cavity in the cylinder body 21, and after airflow enters the cylinder body 21 from the air inlet channel, the airflow is discharged to subsequent equipment from the exhaust seat 3 under the mutual extrusion action of at least two rotors 13, so that the compression function is realized. In addition, the compressor main unit 2 also has a plurality of bearings for rotatably connecting the rotor 13 and a plurality of sealing rings for sealing, which are conventional means, and thus the detailed description thereof is omitted here.

In the second embodiment, the first embodiment of the method,

with reference to fig. 4, the content of the connection structure of the fuel cell compressor provided in this embodiment is substantially the same as that of the first embodiment, and the difference is that one end of the motor shaft 14 connected to the rotor 13 is a conical shaft structure, and the conical shaft structure is sleeved with the shaft sleeve 15, the rotor 13 is installed at the periphery of the shaft sleeve 15 in a limited manner, the rear end of the motor shaft 14 is locked to the shaft sleeve 15 by the screw 17, so as to achieve the purpose of limiting and installing between the motor shaft 14 and the rotor 13, and the length of the rotor 13 can be further shortened and the connection efficiency can be improved by positioning the conical shaft structure in a taper fit manner and locking the conical shaft structure by the screw.

The foregoing is only a preferred embodiment of the present invention, which is illustrative, not limiting. Those skilled in the art will appreciate that many variations, modifications, and equivalents may be made thereto without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (7)

1. A compressor connecting structure for a fuel cell comprises a compressor main unit part (2) and a motor part (1) which are assembled into a whole from front to back, wherein the motor part (1) comprises a shell (11) fixedly connected to the rear part of the compressor main unit part (2), a stator (12) fixedly arranged in the shell (11), and a rotor (13) which can be axially and rotatably arranged in the stator (12), the compressor main unit part (2) comprises a cylinder body (21) and at least two rotor components which can be rotatably arranged in the cylinder body (21), and the connecting structure is characterized in that,

the motor part (1) further comprises a motor shaft (14) penetrating through the rotor (13), and the front end of the motor shaft (14) extends forwards and extends into the cylinder body (21) to form one rotor component.

2. The connection structure of a fuel cell compressor according to claim 1, wherein the compressor main unit (2) further includes an air inlet cover (22) mounted at a front end of the cylinder (21) and a connection plate (24) mounted at a rear end of the cylinder (21), and the housing (11) of the motor unit (1) is fixed to the connection plate (24).

3. The fuel cell compressor connection structure according to claim 2, wherein one end of the motor shaft (14) connected to the rotor (13) is a straight shaft structure, a shaft sleeve (15) is sleeved outside the motor shaft (14), the rotor (13) is limited and mounted on the outer periphery of the shaft sleeve (15), and the rear end of the motor shaft (14) is limited by a lock nut (16).

4. The fuel cell compressor connecting structure according to claim 2, wherein the end of the motor shaft (14) connected to the rotor (13) is a conical shaft structure, a shaft sleeve (15) is sleeved outside the conical shaft structure, the rotor (13) is limited and mounted on the outer periphery of the shaft sleeve (15), and the rear end of the motor shaft (14) is locked and connected to the shaft sleeve (15) by a screw (17).

5. The fuel cell compressor connection structure according to claim 3 or 4, wherein the rotor members are two in number and include a driving rotor (25) formed by the motor shaft (14), and a driven rotor (26) juxtaposed and adjacent to the driving rotor (25).

6. The fuel cell compressor connecting structure according to claim 5, wherein an exhaust seat (3) is further installed between the rear end of the cylinder block (21) and the connecting plate (24), and a gear box is formed between the exhaust seat (3) and the connecting plate (24), and two gears (23) engaged with each other are provided in the gear box and are respectively connected to shaft portions of the driving rotor (25) and the driven rotor (26).

7. The fuel cell compressor connection structure according to claim 2, wherein a through hole for allowing the motor shaft (14) to pass through is formed in the connection plate (24), and the housing (11) of the motor part (1) is fixed to the connection plate (24) by a fastener.

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